Asphalt shingles on large, unbroken roof expanses will generally do what more than those on smaller areas?

When considering the behavior of asphalt shingles, particularly in relation to roof expanses, it's important to understand how temperature changes affect these materials. In larger, uninterrupted expanses of roofing, asphalt shingles are more likely to expand when exposed to heat and contract as temperatures cool down. This cyclical motion of expansion and contraction occurs more prominently on larger areas because there is less interruption from structural elements such as vents, chimneys, and valleys that might otherwise reduce movement.

The larger the area, the more uniform the heat distribution tends to be, leading to a more pronounced effect on the shingles' movement. In smaller areas, the effects of temperature shifts can be mitigated by surrounding components that may absorb or distribute heat differently, resulting in less noticeable expansion or contraction.

Understanding this behavior is crucial for proper roof installation and maintenance, as excessive movement can lead to issues such as gaps, leaks, or premature aging of the shingles. Thus, the correct answer highlights the relationship between roof size and the thermal dynamics affecting asphalt shingles.